Rolling-mill.



F. c. BIGGERT, JR. ROLLING MILL.

A 1.1 T I 91 5,04. PP 0A ION FILED JUNE 1a 1909 Patented Mar. 9, 1909- 2SHEETS-SHEET 1.

WITNESSES INVENTOR Q1 v I v Q c -X WAG-MHZ,

r. c. BIGGBRT, JR; ROLLING MILL.

5,014. APPLICATION FILED JUNE 16, 1908 Patented Mar. 9

2 SHEETS-SHEET 2.

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FLORENCE O. BIGGER/I, JR, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO UNITEDENGI- NEERING & FOUNDRY COMPANY, OF PITTSBURG, PENNSYLVANIA, ACORPORATION OF PENN SYLVANIA.

ROLLING-MILL.

To all whom it may concern:

Be it known that I, FLORENCE O. Breonn'r, Jr., of Pittsburg, Alleghenycounty, Pennsylvania, have invented a new and useful Rolling-Mill, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming part of thisspecification, in which Figure 1 is a plan view, with the roll housingsin horizontal section, of a rolling mill embodying my invention, the endportions of the tables being broken away; Fig. 2 is a side view of thesame with certain parts in section; and Figs. 3 and 4 are detail viewstaken respectively on the lines IIIIII and IV-IV of Fig. 2.

My invention has relation to rolling mills, and more particularly to theconstruction and arrangement of the roller tables and table rolls andto-the manner of journalin the lower mill roll.

Heretofore in rolling mills in which it has been necessary to bring therollers of the roll table up nearly to the bite of the mill rolls, ithas been necessary to journal the last one or two rollers of each tablein the roll housings. This practice has been open to a number of seriousobjections. In the first place, it has been necessary to provideopenings in the roll housings through which the necks of the last rollof each table have been extended. In order to permit the removal ofthese rollers, these openings have necessarily been made of sufficientsize to permit the rollers being removed endwise therethrough. 'Ihisweakens the roll housing to a considerable extent, and in case therollers become seriously bent it has been impossible to remove themwithout practically dismantling the mill. In the second place, a specialarrangement of the driving gear has been necessary for the last tworolls of each table, and great trouble has been experienced in keepingthis gearing in proper working condition, owing to the fact that thelast two rollers of each table being supported in the housing andindependently of the table frame are subjected to the movements of theroll housings as well as to the blows of the pieces being rolled,thereby tending to throw the gears out of line or break them.

My invention is designed to overcome these difficulties by so arrangingthe table frames and roll housings, that all of the Specification ofLetters Patent.

Application filed June 16, 1908.

Patented March 9, 1909.

Serial No. 438,769.

table rollers can be journaled in the table frame and can be driven fromthe line shafts which drive the series of table rollers of each table;also to so arrange the last two rollers in each table that they can bereadily re moved and replaced; also to provide an improved constructionand arrangement of bearings for the lower mill roll.

The precise nature of my invention will be best understood by referenceto the accompanying drawings, in which I have shownone embodimentthereof, and which will now be described, it being premised, however,that the invention is capable of various modifications in the details ofconstruction and arrangement by those skilled in the art withoutdeparting from the spirit and scope of my invention as defined in theappended claims.

In the drawings, the numeral 2 designates the tie plate of the mill, and3 the usual shoe plates held together transversely by the tie plate 2.

4 designates the end housings of the mill, which are in general of theordinary construction, but which, in the construction shown, have theirlegs downwardly tapered, and having their points of least thickness orwidth at about the plane of the rollers 5 of the roll tables. Thistapering of the legs is however not material.

6 designates the side rails or girders of the table frames, and in orupon which the rollers 5 are provided with the usual bearings, saidrollers having extended necks 7 at one end to which are secured drivingpinions 8, the teeth of which are engaged by bevel pinions 9 on theusual line shafts 10. The side rails 6 are preferably bolted to arms orbrackets 3 of the shoe plates 3. The table frames and the manner ofsupporting and driving the rollers are in general of the usualcharacter, but in accordance with my invention each of the side rails orgirders 6 is extended past the outer side of the adjacent housing leg,being provided at such extensions with bearings 11 for the last tworollers 5 and 5 of the tables. These last two rollers of each table arearranged in the manner clearly shown in Figs. 1 and 2. Each oftheserollers is provided with extended reduced necks 12 at each end, thenecks of the roller 5 extending past the outer edges of the adjacenthousing legs, while the necks of the roller 5 extend past the inneredges of said legs, so that the necks I preferably provide the rails 6at the side of the table opposite the line shafts 10 with the laterallyoffset extensions 6 which are provided with the bearings 11 for thenecks of the rollers 5 and 5 7 I 13 designates the upper mill roll, 14the lower roll, 15 the bearing blocks for the upmany ways within thescope of my invention as defined in the appended claims.

I claim-:

1. In a. rolling mill, the combination with a roll housing of a rolltable having. side members extended past and outside of the lowerportion of the housing leg, and table rollers journaled in said sidemembers one at each side of said leg, at least one of said rollersextending through the windows of the housing;

per roll which are movable vertically in 'tlTFSUbstantially asdescribed.

guides 16 of the housings-,.and 17 is one of the screws of the usualscrew-down mechanism for the upper roll. The lower roll 14 is journaledin bearings 18, which are seated in pillow blocks 19. One of thesepillow blocks is seated in the lower portion of each of the housing.windows, in which it is secured by the key 20 and the bolts 21. Each ofthe pillow blocks is provided with a flange 22 at its inner end, whichengages the inner side of the housing and thus holds the block againstoutward movement. The bushings or bearings 18 are held in these pillowblocks in any suitable manner. As shown in Fig. 4 they are provided withflanges 23 at their outer ends, through which extend the bolts 24, whichalso extend through the pillow blocks to the inner sides thereof.

The advantages of my invention will be apparent to those skilled in theart, since it provides an arrangement whereby all of the rollers of eachof the tables can be supported and journaled in the table frames anddriven by direct connection with the line shafts, from which the otherrollers are driven. The entire table is thus rendered independent of theroll housing, so that the shocks and strains of the table are notcommunicated to the housings, nor are those received by the housingscommunicated to the table. The end rollers 5 and 5 of each table can bereadily removed, the rollers 5 being removable at the sides of thehousings, while the rollers 5 can be removed from the housing windows.The lower mill roll is also readily removable through the housingwindow.

I do not wish to restrict myself to the precise construction andarrangement of the parts, as I have herein shown and described, as theycan be modified and changed in 2. In a rolling mill, a roll housinghaving legs of decreasing width toward the lower end of the housing,said legs decreasing in width at their inner sides and table rollersstraddling said legs and j'ournaled independently of the housing;substantially as described.

3. In a rolling mill, the combination with a rollhousing and a rolltable having side members extended past the said legs and provided withhearings for a table roller at each side of the leg and table rollersstraddling the leg and journaled onsaid side members, oneof the rollersextending through the windows of the housing substantially as described.

4. In a rolling mill, the combination with a roll housing of a rolltable having side members extended past and outside of the lower portionof the housing leg, a series of rollers journaled in said side members,the last two rollers of the series heing j ournal'ed' respectively atopposite sides of the housing leg, and a driving shaft for the rollershaving a direct gear connection with each of the rollers; substantiallyas described.

5. In a rolling mill, the combination with roll housings of a tableframe supported independently of said housings and having hearings fortable rollers at each side and outside of the housing legs and" tablerollers straddling the housing legs and ournaled in such bearings;substantially as described.

In testimony whereof, I have hereunto set my hand.

FLORENCE o. BIGGERT, JR.

Witnesses: GEO. PARMELEE, H. M. CORWIN.

